Patent GB-764250-A (GB)
Title: Improvements in or relating to devices for marking and setting a sheet or card in a book-keeping or like machine
Inventor: MARTIN HANS
IPC: B41J11/46
Filed: 1955-01-27
Abstract: 764,250. Typewriters. ALPINA BUROMASCHINEN-WERK GES. Jan. 27, 1955, No. 2487/55. Class 100(4) A device for marking and setting a sheet or card held in the insertion hoppers of a book-keeping or like machine comprises a cutting and compressing tool movably mounted on one of each of the insertion hoppers. In the construction shown in Figs. 1, 2, 4, 6, 7, 9, the hoppers are displaceable along bar 40 pivoted on the platen spindle, and each comprises a transparent front wall 49 and a rear wall 48. The cutting and impressing blade 5, shaped as in Fig. 9 with a cutting edge 59 and a part below for forcing paper back beneath the cut, and mounted on carrier 11 hinged to the hopper, is swung to cooperate with counter blade 6, to cut and impress the paper, when a type bar 16 strikes extension 15 of plate 11, the latter being spring-returned and having its movement in both directions adjustably limited, thus regulating the depth of cut A rocking arm 29 pivoted on a spindle 28 .on each hopper is spring pressed anticlockwise; Fig. 6, against a stop, and has a spindle 31 on which a stop pawl 32 and control arm 33 are rotatable, the pawl and arm being connected, with play to allow for different thicknesses of paper,. by a torsion spring. A further torsion spring about spindle 31 connecting arms 29 and 33 presses the latter anticlockwise. In the operative position of the machine, Fig. 7, spring-urged rollers 3 press the cord 2 against the platen, but when bar 40 &c. is pushed to the inoperative position, Fig. 6, the rollers are spaced from the platen by a system of bell-cranks. A new card 2 will be cut and impressed at the same time as printing takes place adjacent the left and right hand edges of the card at points determined by the positions of the hoppers. A previously impressed card is inserted until it abuts arms 33, thus being oriented, and is fed further so that arms 33 are moved clockwise, Fig. 6. and pawls 32 swung to engage the card. On still further feeding pawls 32 slide into the impressions, the cut edges of the paper dropping into notches 34 in the pawls. When the hoppers are now pressed to the rear, Fig. 7, the card is' held by.rollers 3 and. the hoppers &c. move relatively thereto, pawls 32 and arms 33 rotating to the position shown in Fig. 7, and arms 29 then pivoting about 28 so that the pawls press more strongly and hold the hoppers in typing position. The cutting impression for the next line setting takes place with the impact of the associated type bars. On the actuation of the line shift the card 2 moves upwardly and releases pawls 32 which are returned. By arranging the impressions at different distances from the two edges of the card the arrangement may be used to cut impressions on both sides of the card.' In the construction shown in Figs. 11 and 12 the cut impressions are formed at'the same time on both edges of the card by tools actuated commonly by rotation of a cam shaft by means of a handle, rotation of the cam shaft being prevented until the hoppers have been pivoted to the vertical position. The front wall 49 is replaced by a wire bow 62, counter blades 65 are mounted on the fronts of the hoppers, and hook-shaped blades 5, with cutting edges as in Fig. 9, are pivoted on the rear of the hoppers and extend through windows 86. Back blade 5 is pressed by a spring 65 against a cam shaft 66 which is rotated, by a torsion spring 68 on journal 67 of the shaft, in the direction of arrow A, Fig. 12. Lever 70 connected to journal 67' has a nose 71 pressed by torsion spring 68. against stop 72, and a pivot 73 for a locking pawl 74 which is pressed by spring 75 against stop 76. Part 77 of the carriage carries a releasing arm 78 in the pivot path of pawl 74, and a pivoted arresting lever 80, slideway 81 of which is engaged by pin 82 on rocking lever 42'. In the operative position, Fig. 12, pawl 74 is pressed by spring 75 against stop 76 and prevents pivoting of lever 70. If lever 70 is moved in the direction of arrow B, Fig. 12, bar 40 and the hoppers &c. move to vertical position. Then pawl 74 abuts arm 78 which lifts the pawl from the stop, and lever 70 with shaft 66 can now be rotated about journals 67, 67', and the swell 69 on the cam shaft abuts the arms of blade 5 and pivots the latter so that an impression is cut. The hoppers are held vertical by pins 82 in slideways 81. Spring 68 returns lever 70 on release, so that its nose 71 again rests against stop 72, and spring 65 moves blade 5 to rest position.